jfruh writes: "Pundits have been gleefully predicting the death of email for years, but nobody has really been able to explain what will replace email, especially for the medium's archiving capabilities that businesses and governments have come to rely on. It's possible that email won't vanish, but rather become insivible, one component of an integrated communication stream that will be transparent to users but still present — and useful — under the hood. It may turn out that Google's Wave, which was built on this idea, was just a bit ahead of its time."